\documentclass[12pt,a4paper,draft]{book}
\usepackage{ctex}
\usepackage[utf8]{inputenc}
\usepackage{amsmath}
\usepackage{amsfonts}
\usepackage{amssymb}
\usepackage{makeidx}
\usepackage{graphicx}
\author{Greiner}
\title{Classical Mechanics \\ Point Particles And Relativity}
\begin{document}

\maketitle
\input{forward.tex}
\tableofcontents
\part{VECTOR CALCULUS}
\input{CH1/Introduction and Basic Definitions.tex}
\input{CH2/The Scalar Product.tex}
\part{NEWTONIAN MECHANICS}

\part{THEORY OF RELATIVITY}


\end{document}